Le-Chatelier's apparatus is used for testing

For construction of structures in seawater, the cement generally preferred to, is

The cement, widely used in retaining walls, is

The most useless aggregate is, whose surface texture is

The approx. ratio of the direct tensile strength to direct compressible strength test is

The apparent specific gravity of an aggregate is defined as

Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less…

If fineness modulus of sand is 2.5, it is graded as